Hinged door for furnaces and the like



Oct. 9, 1951 H. M. SIMON HINGED DOOR FOR FURNACES AND THE LIKE Filed Oct. 20, 1949 2 Sheet s-Sheet 1 [I I/III" l- 28 Q 27 36 5 38 I4 a -I 1 J g m; m l 21 A? 4. 3| [r 'Ii, 29

I7 24 26 23 I=I I ,14 INVENTOR lo HAROLDE. M. SIMON ATTORNE Oct. 9, 1951 H. M. SIMON 2,571,070

HINGED DOOR FOR FURNACES AND THE LIKE Filed Oct. 20, 1949 2 Sheets-Sheet 2 I 30 I. 11 I.

' E INVENTOR.

24 HAROLDE M. SIMON 23 Wm fiu dgi ATTORNEYp' Patented Oct. 9, 1,951

HINGED DOOR FOR FURNACES AND THE LIKE Harolde M. Simon, New Hartford, N. Y., assignor to Utica Radiator Corporation, Utica, N. Y., a

corporation of New York Application October 20, 1949, Serial No. 122,525

The present invention'relates to an improved hinged door or closure for furnaces, boilers and the like.

An important object consists in associating with the opening in a furnace or boiler, a hinged door mounted on one side of the opening and provided with means for accurately positioning the door so that it may be closed in proper sealing engagement with the front wall of the opening without requiring hand fitting.

Heretofore, to accuratel assemble a furnace or boiler door, it has been necessary to hand fit the hinged connection of the door, with the result that not only is considerable time required but the parts are not readily interchangeable, nor can they be easily replaced when broken or damaged. These disadvantages are overcome in the present invention since the hinged door is mounted on a bracket or lintel that extends outwardly from one side of the furnace opening, and the door adjacent its hinged side has an inwardly disposed outer flange or skirt coextensive in length with the adjacent side of the door and with which is associated a spaced parallel inner flange that is interrupted by vertically spaced transverse slots for receiving the arms of a supporting bracket or lintel to which the door is pivotally connected by spaced hinged pins insertable in webs located between the inner and outer flanges. The outer flange or skirt of the door is so positioned and arranged as to conceal the hinge pins when the door is moved to its closed position and gives a neat appearance to the assembled door structure.

A further object consists in providing the outer surface of the furnace or boiler adjacent the opening therein, with an elongated recess or well havin vertically spaced tubular bosses formed with exposed ground surfaces arranged to abut complementary formed bosses on the inner side of'the supporting bracket, so as to provide means for insuring the accurate positioning of the hinged pins that connect the door to the fura preferred embodiment the invention may assume:

Figure 1 is a fragmentary perspective view of the front of a furnace with the door in its opened .position and showing a hinged. assemblycon- 4 claims. (Cl. 173) structed in accordance with the present invention. f

Figure 2 is a detail view of the lower portion of the furnace showing the door in its closed position and with parts of the hinge in section for the purpose of illustration.

Figure 3 is a sectional view taken substantially along the line 33 of Figure 2 and showing the door in dotted lines in its opened position.

Figure 4 is a sectional view taken substantially along the line 44 of Figure 2 and showing the door in dotted lines partly opened.

Figure 5 is a detail perspective view of the front of the furnace adjacent the opening therein.

Figure 6 is a detail perspective View of the upper corner of the door constructed in accordance with the present invention, and

Figure 7 is a detail perspective view of a supporting bracket or lintel.

Referring to the drawings, l0 designates the front wall of a boiler, furnace or the like having a feed or ashpit opening II (Fig. 1). The wall of the opening II may be enclosed by a flanged throat I2 which is formed with an outer or exposed ground sealing surface IS. The opening II may be of any size and configuration and is arranged to be closed by a door !4. The outer face of the front wall In of the furnace adjacent one of the sides of the throat l2, such as the side I5 (Fig. 1), is formed with an elongated recess or well I6 (Fig. 5) which preferably is formed with verticall spaced outwardly projectingbosses or pads I'I having exposed ground or machined surfaces I8. A substantially U-shaped supporting member or bracket I9 has an intermediate base portion 20 (Fig. '7) and vertically spaced outwardly extending parallel arms 2 I. The base portion 20 of the bracket is arranged to fit flush into the recess I6 and has vertically spaced transverse through openings 22 that terminate on the inner side of the base in tubular bosses 23 provided with exposed ground surfaces 24 that register with the complementary surfaces I8 on the bosses IT. The bracket 26 may be maintained in a fixed position in the recess It by the threaded bolts 25 which extend through the tubular aligned bosses I1 and 23 and are retained in position by the nuts 26 (Fig. 3).

The door I5 at its hinged side 2! (Fig. 1) is formed with an outer flange or skirt 28 (Fig. 6) which extends inwardly a limited distance and is provided with vertically spaced transverse slots 29 adjacent the opposite ends thereof for loosely receiving the arms 2I of the supporting member I9 when the parts are assembled. Spaced in wardly from the outer flange 28 is a parallel flange 30 (Fig. l) which adjacent the slots 29- has outer curved walls 3 I. The space 32 between the parallel flanges 28 and 30 of the door adjacent the slots :28 is closed -or interrupted by spaced transverse webs 33 having vertical openings 34 (Fig. 6) that align with complementary formed openings 35 in each of the arms 2| of the supporting member 20, so as to receive .the hinge pins 36 for pivotally connecting the door M "to the furnace. It will be observed that the upper hinge pin 36 extends into the space 32 :above the upper web 33, while the lower hinge pin 36 (Fig. 1) is mounted in vertical alignment with the upper hinge pin and extends into the lower portion of the space 32 so that when the openings 34 and 35 are brought into vertical alignment with one another, the hinge pins may be conveniently inserted :and, conversely, when itis desired todisconnect the door from the furnace, the door may be swung to its opened position to permit access to the hinge pins so that they can be re- .moved.

The arms 2! of the supporting member 23 are formed with rounded corners 31 (Fig. 7) adjacent the curved wall 3| of the slots ZS-so as to allow the free swinging movement of the door about its hinge. The top, bottom and outer side of the door 14 may have an inwardly disposed flange 33 connected to the flange 38 (Fig. 1). and provided with a ground outer surface 39 extending continuously around the door to engage the complementary formed surface E3 on the throat 12, when the door is moved to its closed position.

The supporting member or lintel 23 is detachably connected by the bolts 25 and the nuts 2-3 to the furnace wall, and the arms 2| thereof may have the openings 35 accurately positioned so as to receive the pins 35 when the door is assembled. Moreover, the ground surfaces 24 and the bosses 23 are arranged to be moved into abutting contact with the corresponding surfaces 18 on the bosses H in the well I6, to insure the supporting member being properly mounted on the furnace in order that the positioning of the openings 35 may be accurately formed in the arms ill for T1.- ceiving the hinge pins 36, and thus provides means for causing the ground surface 33 on the inner wall of the door M being accurately brought into sealing engagement with the surface I3 (Fig. 1) so as to properly close the door. In other words, simple, efficient and positive means are provided for hingedly connecting the door to a furnace or boiler in such a manner that the various parts may be readily interchanged and if damaged or'broke'n can easily be replaced without having to be hand fitted. It will, therefore, be seen that the accuracy of assembling the door on its hinge support is accomplished by ordinary machining and grinding practices, that eliminates the necessity of hand fitting of the door and the hinge. Where repairs are required to be made to the hinge or the door, a true and accurate fit of the new part is assured as the dimensions of both the hinge and the door and their associated parts are all readily accurately preformed so as to be installed at a minimum expenditure of time and effort.

When the door is moved to its closed position (Fig. 3), the hinge pins 36 and their associated parts are concealed and the accurate location of the door on its support will cause the same to be moved in proper sealing engagement with the furnace so, as to close the opening 12 and at the same time permit the ready removal, of the door for the purpose of repair or replacement without the necessity of hand fitting any of the parts as has heretofore been required.

It will be understood that the form of the inven- 4 tionishown is merely illustrative and that such changes may be made as come within fthe -scope of the following claims.

I claim:

1. In combination with the wall of a furnace or the like having an opening therein, a door for closing said opening, said wall having a recess on its outer face adjacent one side of said opening and extending substantially parallel thereto, a supporting bracket having a base portion fitted in said recess and vertically spaced outwardly extending arms, said arms having vertically aligned apertures, means for connecting the base portion of the bracket to the wall of said recess, said door having atone side-an outer flange and a spaced. inwardlydisposed flange parallel to outer flange, and arranged to abut the front wall of the opening when the door is moved to its closed position, said outer flange and door having vertically spaced transverse slots through which the arm of said bracket extend, the space between said flanges adjacent said slots having transverse webs above and below the slots, said webs having vertical apertures aligning with the apertures in said arms, and hinge pins extending through said apertures for pivotally connecting the door to said furnace.

2. In combination with the wall of a furnace having a door as called for in claim 1, in which the walls of said slots adjacent the ends of said arms are curved to allow free swinging movement of the door about its hinge.

3. In combination with the wall of a furnace having a door as called for in claim 1, in which the opening in the wall is enclosed by an outwardly extending flange provided with a ground sealing surface, and in which the door has a top, bottom and outer flange coacting with the inner flange to form a continuous portion having an exposed ground surface arranged to engage the ground surface on the furnace when the door is closed so as to seal the same.

4. In combination with a furnace wall having an opening therein, a door for closing said opening, said Wall having a recess on its outer face adjacent one side of said opening and provided with vertically spaced bosses having exposed ground surfaces, a supporting member having a base portion and spaced outwardly and laterally extending arms, said base portion having extending outwardly from the inner side thereof vertically spaced tubular bosses having exposed ground surfaces engaging the ground surfaces on the bosses in said recesses, means extending through said base portion and said bosses for detachably connecting the supporting member to the furnace, and means for pivotally connecting the door to the arms of said supporting member.

HAROLDE M. SIMON.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 175,312 Wemyss Mar. 28, 1876 980,764 Cushing Jan. 3, 1911 1,914,372 Hvoslef June 20, 1933 1,940,038 Winters Dec. 19, 1933 1,983,686 Wells Dec. 11, 1934 FOREIGN PATENTS Number Country Date 741,778 France Dec. 13, 1932 

